- Preheat the Oven: 
 Preheat your oven to 375°F (190°C).
- Cook the Pasta Shells: 
 Cook the jumbo pasta shells according to package instructions until al dente. Drain and set aside.
- Prepare the Filling: 
 In a skillet over medium heat, cook ground beef until browned. Add chopped onion and minced garlic, sautéing until the onion is translucent. Drain any excess fat.
- Combine Ingredients: 
 In a large bowl, mix the beef mixture with ricotta cheese, half of the mozzarella, half of the Parmesan, dried oregano, dried basil, salt, and pepper.
- Assemble the Stuffed Shells: 
 Spoon the beef and ricotta mixture into each cooked shell. Arrange the filled shells in a baking dish.
- Add Sauce and Cheese: 
 Pour marinara sauce over the shells. Sprinkle with the remaining mozzarella and Parmesan cheese.
- Bake: 
 Cover the baking dish with foil and bake for 25–30 minutes, until the cheese melts and the sauce is bubbly.
- Garnish and Serve: 
 Remove from the oven and let cool slightly. Garnish with fresh chopped basil and serve.
Serving and Storage Tips:
